These cattle can browse as well as others on grass, but from the projection of the lower jaw they cannot, during the often recurrent droughts, browse on the twigs of trees, reeds, etc.

, to which food the common cattle and horses are then driven; so that at these times the Niatas perish, if not fed by their owners.

Before coming to Mr. Mivart's objections, it may be well to explain once again how natural selection will act in all ordinary cases.

Man has modified some of his animals, without necessarily having attended to special points of structure, by simply preserving and breeding from the fleetest individuals, as with the race-horse and greyhound, or as with the game-cock, by breeding from the victorious birds.